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Finding the Fourth Proportional to 113,978.57, 170,965.95 and 43,873.07

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Solution

The fourth proportional to 113,978.57, 170,965.95 and 43,873.07 is: 65,808.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,978.57 : 170,965.95 = 43,873.07 : x
  2. Step 2: Convert to fraction form
    113,978.57/170,965.95 = 43,873.07/x
  3. Step 3: Cross multiply
    113,978.57x = 170,965.95 × 43,873.07
  4. Step 4: Simplify right side
    113,978.57x = 7,500,800,237.14
  5. Step 5: Solve for x
    x = 7,500,800,237.14/113,978.57
  6. Step 6: Final answer
    x = 65,808.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.